Is a fixed interest rate of 7% from a "savings office" considered unlawful (haram), especially if the office achieves profits higher than 10% and the depositor does not stipulate this percentage? And if it is unlawful, is it permissible to give this money to one's father to pay off his debt, or to one's paternal uncle or maternal uncle to build their homes?

Repentance from usurious bank deposits is obligatory by immediately withdrawing the money and disposing of the usurious interest by spending it on charitable causes and public welfare, such as for the poor. It should not be returned to the bank nor consumed. It is permissible to give these interests to your paternal or maternal uncle for building his house if he is in need, and similarly, to pay off your father's debt with it if he is unable to do so.